Improvement in railroad-rail joints



M. McINTYRE.

Railroad Rail Join'ts] P aaaa ted March'4,1873.

"WITNESSES.

UNITED STATES PATENT OFFICE.

'MALOOLM F. MOINTYRE, OF GIRARD, PENNSYLVANIA.

IMPROVEMENT IN RAILROAD-RAIL JOINTS.

Specification forming part of Letters Patent No. 136,530, dated March 4,1673.

To all whom it may concern:

Be it known that I, MALCOLM F.1VlCINTYRE, of Girard, in the county ofErie and State of Pennsylvania, have invented a new and useful ImprovedRail-Joint Fastening; and I do hereby declare that the following is afull, clear, and exact description thereof, sufficient to enable thoseskilled in the art to which my invention appertains to make and use thesame, reference bein ghad to the accompanying drawing making part ofthis specification, and to the letters and figures marked thereon.

My invention has for its object the fastening of railjoints without theuse of screwbolts and nuts; and it consists in a headed tapering bolthaving ratchet-teeth formed on one side and a depression in the head,and is applied to the fastening of rail-joints by the insertion of twoof said bolts in each perforation in the rail and fish-plates fromopposite directions, so that the tapering end of each bolt lies in thedepression in the head of the opposite bolt, and is bent down againstthe head, thus holding the fish-plates and rail firmly together.

In the drawing, Figure l is a perspective view of my improved bolt. Fig.2 is a transverse section, showing its application to a railjoint.

The bolt A is tapering in form, and may be either round or angular. Onone side is formed a series ofratchet-teeth, as shown at a The head of.the bolt may be of any suitable form, and has on one side a depression,a. This device need not be confined to fastening railjoints, as it isobvious that there are numerous uses to which it may be applied.

Referring to Fig. 2 of the drawing, B represents a rail, and O 0 twofish-plates. both rail and fish-plates being perforated in the usualway. The bolts A A are passed through from opposite directions and theirends hammered down, as shown, thus holding the parts firmly together.The perforations in the rail are made larger than those in thefish-plates, to allow of contraction and expansion.

Having thus described my invention, what I- claim as new, and desire tosecure by Letters Patent, is-

1. The bolt A, formed with the ratchet-teeth (t and depression asubstantially as shown and described.

2. The combination of the bolts A A, rail B, and fish-plates 0 (3,substantially as shown and described.

The above specification of my invention signed by me this 21st day ofJanuary, 1873.

Witnesses: M. F. MGINTYRE.

E. R. BROWN, 7 EDM. F. BROWN.

